I bought two 30 year olds a matching pair in October and I'm spending time on fixing them both up so I just started following the crowd here

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i do not know for certain , but perhaps it alters multiball to just dropping the drop target under the skull ?

you like them super snappy then , i moved to the newer spring style but i think the springs i used may need to be longer

the schematic shows the capacitors with a polarity ,but are the mylar capacitors for the flippers non polar?

I removed the lower mylar off the play field tonight , removed all the adhesive, waxed it up and installed 3 new balls . played a game that was much quicker and ordered a mylar replacement , that old mylar was scratched up and made the inserts look cloudy and slowed down the ball
night and day

i bought the same thing on mine the paint would never dry and i had to sand all the paint off and repaint it , i like this skull
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sanding it also flattened all the 3d printer angles on the skull surface and the teeth is appliance porcelain paint with gray shadowing between the teeth it may be to bright but i wanted that artificial manufactured look

I think it looks good the clear coat it is a plastic coating too so i can not see a temp expansion issue if its kept in your home , the protector is so thin i wonder if the ball will not be too effected on the skill shot . i have one on my big game they gave me shims for the drop targets, the only other thing i would be concern with is if the play field barriers are lifted do you have enough thread on posts to attach stuff, other wise it looks like a lot of work and your getting it done

also test the ball hop over the one drop target in to the vuk,